Bug 712341

Summary:	FIXED_IN_GIT: 'Low memory' reported on 6GB RAM machine by 'systemd-readahead-collect'
Product:	[Fedora] Fedora	Reporter:	Bert DeKnuydt <Bert.Deknuydt>
Component:	systemd	Assignee:	Lennart Poettering <lpoetter>
Status:	CLOSED ERRATA	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	medium	Docs Contact:
Priority:	unspecified
Version:	15	CC:	harald, johannbg, lpoetter, metherid, mschmidt, notting, plautrba
Target Milestone:	---
Target Release:	---
Hardware:	i686
OS:	Linux
Whiteboard:
Fixed In Version:	systemd-26-3.fc15	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2011-06-15 23:52:39 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Bert DeKnuydt 2011-06-10 11:06:29 UTC

Description of problem:

Systemd's readahead reports low memory on 32bit machines with 6GB RAM

Version-Release number of selected component (if applicable):

systemd-26-2.fc15.i686

How reproducible:

Always

Steps to Reproduce:
1. boot a 32bit machine with enough RAM
2. dmesg | grep 'low memory'
3.
  
Actual results:

Jun 10 12:33:03 xanadu kernel: [    9.429340] systemd-readahead-collect[452]: Disabling readahead collector due to low memory.

Expected results:

<nothing>

Additional info:

I guess a cast of some kind is needed in enough_ram(void) in readahead-common.c.

Comment 1 Michal Schmidt 2011-06-10 11:12:40 UTC

Thanks for the report.

The code
        assert_se(sysinfo(&si) >= 0);   
        return si.totalram > 127 * 1024*1024;

fails to take into account that

   the sizes are given as multiples of mem_unit bytes
    -- man sysinfo

Comment 2 Michal Schmidt 2011-06-10 12:38:14 UTC

Patch:
http://lists.freedesktop.org/archives/systemd-devel/2011-June/002590.html

Comment 3 Michal Schmidt 2011-06-10 13:03:13 UTC

http://cgit.freedesktop.org/systemd/commit/?id=597b99b09a007dfa8ddfce31c480765b0c7baa6a

Comment 4 Fedora Update System 2011-06-13 00:00:36 UTC

systemd-26-3.fc15 has been submitted as an update for Fedora 15.
https://admin.fedoraproject.org/updates/systemd-26-3.fc15

Comment 5 Fedora Update System 2011-06-15 05:35:26 UTC

Package systemd-26-3.fc15:
* should fix your issue,
* was pushed to the Fedora 15 testing repository,
* should be available at your local mirror within two days.
Update it with:
# su -c 'yum update --enablerepo=updates-testing systemd-26-3.fc15'
as soon as you are able to, then reboot.
Please go to the following url:
https://admin.fedoraproject.org/updates/systemd-26-3.fc15
then log in and leave karma (feedback).

Comment 6 Fedora Update System 2011-06-15 23:52:24 UTC

systemd-26-3.fc15 has been pushed to the Fedora 15 stable repository.  If problems still persist, please make note of it in this bug report.